"Fun fact, Oliver slept with her. Seriously bad taste." Yet another thing that she was still kinda annoyed about. Not the sleeping with - well, yes, on a fundamental level the sleeping with the enemy thing was gross, but not with the idea of him sleeping with people. It was, sort of his thing or something.
"But yeah, she was super evil. Big fan of wanting to kill me." Yeah, Felicity wasn't sorry Isabel was dead. Not at all.